Here are our top tips on how to safely buy a great used phone ... allowing you to put some seriously potent mobile hardware ...

Mobile phones aren't all that mobile when it comes ... to accept a hand-me-down phone from a friend or family member or buy a used phone, but compatibility issues and carrier locks could stand ...

Try selling your old cell phone directly to a buyer through Craigslist or eBay to reap the most cash. Sites like sellcell.com ...